Researchers at The University of Manchester and Central Manchester University Hospitals NHS Foundation Trust have developed a new interactive smartphone game can help children use a key asthma inhaler ('a ...

Coughing, wheezing and shortness of breath are symptoms asthma sufferers are used to. They are also the symptoms of chronic obstructive pulmonary disease (COPD). For sufferers, as well as physicians, it can be difficult to ...

Native American ancestry is associated with a lower asthma risk, but African ancestry is associated with a higher risk, according to the largest-ever study of how genetic variation influences asthma risk in Latinos, in whom ...

Four substances have been added in the U.S. Department of Health and Human Services 13th Report on Carcinogens, a science-based document that identifies chemical, biological, and physical agents that are ...

Storing it in the bathroom and making it part of a daily routine may be helpful advice that doctors can give their older asthmatic patients who struggle to remember to take their daily prescribed medication. ...

Corticosteroid drugs that are given by inhalers to children with asthma may suppress their growth, evidence suggests. Two new systematic reviews published in The Cochrane Library focus on the effects of inhaled corticosteroid drugs ...

Children who wheeze are at risk of developing damage that will affect their lung function by the age of 6 years, according to researchers at CHU Sainte-Justine Hospital and the University of Montreal. These appear to be persistent, ...

(HealthDay)— Many parents know that allergies are seasonal, but fewer may realize that the same is true of asthma: A new study suggests the riskiest time for children with asthma is September, as they head ...

Overweight and obesity are significant risk factors for reduced lung function in school-aged children with a history of early childhood wheezing, according to a study carried out at the University of Eastern Finland. The ...

A popular combination asthma therapy dogged by safety concerns has not harmed British Columbians and should remain in use, according to researchers at the University of British Columbia and Vancouver Coastal Health Research ...

Teenagers in the child welfare system are at higher-than-average risk of abusing marijuana, inhalants and other drugs, according to a study in the November issue of the Journal of Studies on Alcohol and Drugs.

Inhalation

Inhalation (also known as inspiration) is the movement of air from the external environment, through the air ways, and into the alveoli.

Inhalation begins with the onset of contraction of the diaphragm, which results in expansion of the intrapleural space and an increase in negative pressure according to Boyle's Law. This negative pressure generates airflow because of the pressure difference between the atmosphere and alveolus. Air enters, inflating the lung through either the nose or the mouth into the pharynx (throat) and trachea before entering the alveoli.